Shake unit



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F. M. SANGER SHAKE UNIT Filed Dec. 28, 1936 Oct. 10, 1939.

Oct. 10, 1939. F. M. sANGER SHAKE UNIT Filed Dec. 28, 1936 3 Sheets-Sheet 3 ATTO R N EYS Patented Oct. 10, 1939 UNITED STATES PATENT OFFiCE SHAKE UNIT Application December 28, 1936, Serial No. 117,795

14 Claims.

This invention relates to a shake unit for Fourdrinier machines.

In the manufacture of paper by Fourdrinier machines it is the usual practice to shake that section of the machine where the formatio-n of the sheet occurs. It sometimes becomes desirable to vary the amplitude or frequency of the shaking strokes. In machines as heretofore known, it is necessary to stop the machine and effect an adjustment or substitution of operating parts in order to obtain such variations in the shake.

It is an object of the present invention to provide a shaking device for Fourdrinier machines 'such that both the frequency and amplitude of shake may be Varied without stopping the machine.

It is a further object of the invention to provide apparatus of the type referred to in which all moving parts may be lubricated by a force feed.

With these and other objects in View, the nvention consists in the features, combinations, details of construction and arrangements of parts which will first be described in connection with the accompanying drawings and then more particularly pointed out.

In the drawings,

Figure 1 is a longitudinal vertical section through a shaking apparatus constructed in accordance with the invention;

Figure 2 is a fragmentary sectional View taken on the broken line 2--2 of Figure 5;

Figure 3 is a horizontal sectional View of the apparatus shown in Figure l, the section being taken at two different levels;

Figure 4 is a sectional View taken on the line 4--4 of Figure l;

Figure 5 is a fragmentary view showing the indicating device in elevation;

Figure 6 is a sectional View taken on the broken line 6-6 of Figure 1, and

Figure '7 is a fragmentary vertical sectional View showing the oil pump unit.

Referring to the drawings, in the embodiment of the invention here illustrated as an example, in a casing II mounted on a foundation I2 are alined bearings I3 in which is rotatably mounted a drive shaft I4. At one end of this shaft is a iiy wheel I5. The other end is connected with a suitable source of power (not shown). This is preferably a Variable speed motor or a constant speed motor provided with variable speed reduction gearing.

Within casing II are vertical transverse web portions I1 having central openings through which shaft I4 extends.

Extending through an opening 29 in the casing is a shake arm 28 which is connected, in any suitable manner, with that portion of the Four- 5 drinier machine (not shown) which is to be shaken.

The invention in its entirety includes an operating connection for causing rotation of shaft I4 to give shake arm 28 a reciprocating motion 10 and means, operable while shaft I4 is rotating, for adjusting said connection to vary the amplitude of movement of arm 28. This may conveniently be accomplished by an eccentric ring-eccentric strap connection between shaft and arm 15 and means for varying or adjusting the effective ecc-entricity of said ring. Although capable of Various constructions, in the embodiment here illustrated as an example, keyed to shaft I4 to be rotated thereby and movable axially thereon is a 20 sleeve I8. This sleeve is cylindrical in form but rotates eccentric-ally by reason of the fact that the axis of its bore is at an angle. Thus, its eccentricty at one end is equal and opposite to its eccentricty at the other end. 25

Keyed to and rotating with sleeve I8 is an eccentric ring 22. Axial movement of this ring is prevented by its engagement with oppositely disposed pairs of friction half-rings 20 carried by the web portions I'I. o

Embracing ring 22 is an eccentric strap 24 formed in two parts secured together by bolts 2S. One of these strap parts carries shake arm 28 (Figure 4).

With the construction described, rotation of 3 shaft I4 rotates sleeve I8 and ring 22 and the resulting movement of strap 24 reciprocates shake arm 28 to shake the Fourdrinier.

The frequency of shake may be varied, without stopping shaft I4, by varying the speed of the 40 variable speed motor, if one is used, or by variation of the speed reduction gearing relation if the latter is used.

The amplitude of shake may be varied, Without stopping shaft I4, by moving sleeve I8 axially along shaft I4. It Will be seen that when sleeve I8 is shifted axially to the right, as viewed in Figure l, its eccentricty combines with the eccentricity of ring 22. In other words, the effective eccentricty of ring 22 is increased, thereby 50 increasing the stroke of arm 28 and the amplitude of the shake. Conversely, when sleeve S3 is shifted axially to the left, as viewed in Figure 1, its eccentricty tends to offset the eccentricty of ring 22. In other Words, the effective eccen- 55 tricity of ring 22 is decreased, thereby decreasing the stroke of arm 28 and the amplitude of the shake. With the construction here shown, the effective eccentricity and hence the amplitude of shake may be varied from a predetermined maximum to substantially zero,

While the sleeve I8 may be axially shifted in various ways and by various means, in the ernbodiment here illustrated as an example, the sleeve has a concentricextension (Figure l) terminating in a head or flange fill. This flange has an interlocking fit in a recessed shifting or pushpull unit. To this end, a shouldered split thrust collar 39 fits over the flanged end of sleeve I8. Bolted to the collar 39 and overlapping the end of sleeve I8 is a split ring 42. As appears in Figure 1, collar 39 and ring 42, when assembled, provide an annular recess in which flange du has an interlocking fit. Thus, movement of the shifting unit 39-42 in either direction shifts sleeve I8 axially of the shaft.

While this shifting unit may be adjusted or moved in various ways, in the embodiment here illustrated as an example, thrust collar 39 has two tapped holes (Figure 3) through which are threaded two screw shafts 3G. Each screw 35 has mounted thereon a spiral gear 34, the two gears 34 (Figure 6) meshing, respectively, with spiral pinions 32 mounted on a shaft 3'3. This latter shaft has a squared end for receiving a crank handle 25. With the construction described, operation of handle 25 and the consequent rotation of screws 3S displaces shift unit 353-42 and thereby shifts sleeve I8 axially of the drive shaft. As will be apparent, the direction of shift depends upon the direction of handle rotation.

The invention in its entirety includes means for providing visual indication of the relative set ting of the apparatus. This may be conveniently accomplished by a pointer having a synchronized connection with the adjusting mechanism. In the exemplication here illustrated, outside the casing II is a dial 51 bearing suitably graduated or calibrated indicia indicating the relative amplitude of shake between zero and a predetermined maximum. Rotating over this dial is a pointer 52 mounted on a shaft 5I. On the inner end of this shaft is a worm gear 53 meshing with a worm shaft 54. This shaft is rotated by a spur gear 55 mounted thereon and meshing with a spur gear 56 mounted on one of the screw shafts 35 (Figures 1 and 2). The parts are so arranged that as the sleeve I8 is shifted from one extreme to the other pointer 52 moves over dial 5T between zero and maximum position.

As appears in Figure 5, the indicating dial is located adjacent the end of shaft 30 which receives the handle 25. Thus the operator, as he rotates the handle, is enabled to shift the sleeve I8 to the proper position for obtaining the desired amplitude of shake as shown by the pointer.

The invention in its entirety includes means for providing a force feed lubricating system for delivering a flow of oil to the several operating parts.

As shown in the present exemplication, on drive shaft I4 is a gear 65 meshing with a pinion 66 mounted (Figure '7) on a pump shaft 6D. This shaft extends into a pump housing 69 having a connection with the interior of casing I I via a passage 6 I. Operating in the pump housing are intermeshing pump gears 6l, 68, the former being mounted on pump shaft 60, the latter on a stud 62.

The pump housing is connected by piping 63 with an oil reservoir 'I5 having communication with an oil sprayer 'I2 located in the upper part of casing II. Reservoir 'I5 also communicates with a pipe I6 opening at a point above the eccentrics; a pipe 'I'I leading to one of the bearings I3 and duct 'I8 leading to the other bearing I3.

The casing II being supplied with a relatively large quantity of oil, all the moving parts are lubricated by a force feed by means of the pump and connections described.

The operation of the apparatus will be clear from the above without further description. With the construction described, both the amplitude and frequency of the shake may be varied while drive shaft I4 is rotating, i. e. without stopping the machinery. Moreover, with the aid of the indicating pointer and dial, the operator is enabled to adjust the parts to any desired amplitude of shake, within the limits of the apparatus, conveniently and with precision.

What is claimed is:

1. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, a shake arm for connection with a Fourdrinier machine, and a variable operating connection between said shake arm and said shaft for giving said shake arm a reciprocating movement of variable amplitude, said connection including an externally cylindrical sleeve axially slidable on said shaft and having a cylindrical bore receiving said shaft, the axis of the bore being coincident with the axis of the shaft and the axis of the cylindrical sleeve as a whole being at an angle to the axis of its bore.

2. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an adjusting element rotatable with and axially movable on said shaft, an eccentric ring rotating with said adjusting element, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, said adjusting element being capacitated to increase or decrease the eiective eccentricity of said ring, dependent on the relative axial position of said element, and means operable while said shaft is rotating for shifting said adjusting element axially of the shaft, thereby to vary the effective eccentricity of said ring and hence to vary the amplitude of reciprocation of said shake arm.

3. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, and means for shifting said sleeve axially on the shaft, thereby to vary the effective eccentricity of said ring and hence to vary the amplitude of reciprocation of said shake arm.

4. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, a sleeve keyed to said shaft to be rotated thereby and axially movable thereon, said sleeve having a portion cylindrical in shape with a bore at an angle, whereby the sleeve rotates eccentrically with the eccentricity at one end equal and opposite to the eccentricity at the other end, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, and

means for shifting said sleeve axially on the shaft, thereby to vary the effective eccentricity of said ring and hence tovvary the amplitude of reciprocation of said shake arm.

5. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring,`

a shake arm for connection witha Fourdrinier machine and connected with said strap, said sleeve having a concentric portion, a flange thereon, a recessed shifting element having an interlocking relation with said flange, and means for moving said shifting element in either direction, thereby to shift the sleeve axially on the shaft.

6. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, a movable collar having a threaded opening therethrough, a screw shaft threaded therein, means including a manually operable handle for rotating said screw shaft, thereby to move said collar, and a connection between said collar and said sleeve for causing movement of the collar to shift the sleeve axially on the shaft.

'7. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, a shake arm for connection with a Fourdrinier machine, an operating connection for causing rotation of said shaft to give said shake arm a reciprocating motion, means including a sleeve axially slidable on said shaft and operable while said shaft is rotating for so adjusting said Operating connection as to vary the amplitude of movement of said shake arm, an indicating dial, a pointer movable thereover, and means operated by said adjusting means for moving said pointer.

8. A shake unit for Fourdrinier machines cornprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap' embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, means operable while said shaft is rotating for shifting said sleeve axially on the shaft, thereby to vary the effective eccentricity of said ring and hence to vary the amplitude of reciprocation of said shake arm, an indicating dial, a pointer rotatable over said dial, and an operating connection between said pointer and said sleeve-shifting means.

9. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said stra-p, a movable collar having a threaded opening therethrough, a screw shaft threaded therein, means including a manually operable handle for rotating said screw shaft, thereby to move said collar, a connection between said collar and said sleeve for causing movement of the collar to shift the sleeve axially on the shaft, an indicating dial adjacent said handle, a pointer rotatable over said dial, and an operating connetcion between said pointer and said screw shaft.

10`. A shake unit` for Fourdrinier machines comprising, in combination, a casing, a drive shaftv rotating in said casing, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, means for shifting said sleeve axially on said shaft, and pump means operated by said shaft for circulating oil through said casing.

ll. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, an eccentric sleeve keyed to said shaft to be rotated thereby and axially movable thereon, an eccentric ring keyed to said sleeve to be rotated thereby, an eccentric strap embracing said ring, a shake arm for connection with a Fourdrinier machine and connected with said strap, said sleeve having a fianged concentric portion, a recessed shifting element having an interlocking relation with said fiange and including a thrust collar, screw shafts threaded through tapped holes in said thrust collar, a crank handle, a shaft rotated thereby, and operating connections between said last named shaft and said screw shafts.

12. A shake unit for Fourdrinier machines comprising, in combination, a rotatable drive shaft, a shake arm for connection with a Fourdrinier machine, an operating connection for causing rotation of said shaft to give said shake arm a reciprocating motion, and means operable while said shaft is rotating for varying the amplitude and frequency of movement of said shake arm, said connection including an externally cylindrical sleeve axially slidable on said shaft and having a cylindrical bore receiving said shaft, the axis of the bore being coincident with the axis of the shaft and the axis of the cylindrical sleeve as a whole being at an angle to the axis of its bore, the two axes meeting at one end of the sleeve and the external periphery of the sleeve being concentric with the internal periphery of the bore at said end of the sleeve.

13. A shake unit for Fourdrinier machines, comprising in combination a rotatable drive shaft, a cylindrical sleeve keyed to said shaft to be rotated thereby and axially movable thereon, said sleeve having its internal bore at such an angle that the sleeve is eccentric to said shaft, a follower ring keyed to said sleeve to be rotated thereby and to permit relative axial movement of said sleeve, said ring having an internal bore at the same angle as said sleeve, an eccentric strap embracing said follower ring, means for connecting said eccentric strap with the shake table of a Fourdrinier machine, thrust plates confining said ring and said strap for preventing axial movement thereof, whereby, upon relative axial movement of said sleeve, the effective eccentricity of said follower ring and strap may be continuously varied from substantially zero to a predetermined maximum, said sleeve having a flanged portion concentric with said shaft, a thrust collar and a ring connected thereto, said thrust collar and ring forming a concentric recess in which said ange is conned, a pair of screw shafts threaded through tapped holes in said thrust collar., a crank handle, a shaft operated thereby, and

operating connections between said last named shaft and said screw shafts, whereby upon operation of said crank handle, said sleeve is axially moved.

14. A shake unit for Fourdrinier machines comprising, in combination, a casing, a rotatable drive shaft therein, a shake arm for connection with the shake table of a Fourdrinier machine, an operating connection for causing a rotation of said drive shaft to give said shake arm a reciprocating motion, said connection including a variable eccentric mechanism, means operable while said shaft is rotating for varying the effective eccentricity of said variable eccentric mech-l anism and thereby the amplitude of movement of said shake arm, an oil pump, an operating connection between said drive shaft and said pump for continuously supplying oil to the parts within said casing while the shaft is rotating, an indicator mechanism mounted outside said casing, and an operating connection between said indicator and said eccentricity-varying means,

whereby said indicator indicates the amplitude 10 of movement for which the unit is adjusted.

FRANK M. SANGER. 

